function al(imageName,imageWidth,imageHeight)
{
posLeft = (screen.width) ? (screen.width-imageWidth)/2 : 0;
posTop = (screen.height) ? (screen.height-imageHeight)/2 : 0;
newWindow = window.open("","newWindow","width="+imageWidth+",height="+imageHeight+",left="+posLeft+",top="+posTop);
newWindow.document.open();
newWindow.document.write('');
newWindow.document.write('
');
newWindow.document.write('');
newWindow.document.close();
newWindow.focus();
}